Spine
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A retrospective review. ⋯ These results support the use of high-dose definitive radiotherapy for patients with medically inoperable or otherwise unresected, mobile spine or sacrococcygeal chordomas.
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An in vitro biomechanical study of 3 lumbosacral fixation techniques in human cadaveric lumbar-pelvic spine models. ⋯ The 4-rod technique achieved stable biomechanical effects in lumbosacral fixation. At the L5-S1 junction, the 4-rod technique demonstrated better stability than the constructs using S1 screws or S1 screws plus iliac screws..
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A single-center, retrospective study of 39 consecutive patients with Lenke 5 adolescent idiopathic scoliosis (AIS), all operated by a single surgeon using identical surgical technique and type of instrumentation (pedicle screws). ⋯ Without curve flexibility taken into consideration, implant density is positively correlated with thoracolumbar or lumbar coronal Cobb curve correction. No significant correlation is found between screw density and correction index, if the effect of the flexibility was eliminated. There was no association between implant density and magnitude of sagittal curve correction before and after surgery.
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Prospective cohort study. ⋯ This study found that being older, having lower fitness scores, wearing armor longer, and wearing heavier loads increased the risk of LBP in deployed soldiers. Units more likely to wear loads such as the Infantry and Cavalry and tasks commonly involving wearing loads such as patrolling all increased the risk of LBP as well.